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/* ProgressMonitorInputStream.java -- |
/* ProgressMonitorInputStream.java -- |
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Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. |
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This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
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package javax.swing; |
package javax.swing; |
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import java.awt.Component; |
import java.awt.Component; |
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import java.io.FilterInputStream; |
import java.io.FilterInputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
import java.io.InputStream; |
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import java.io.InterruptedIOException; |
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import java.io.IOException; |
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/** |
/** |
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* ProgressMonitorInputStream |
* ProgressMonitorInputStream |
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* @author Andrew Selkirk |
* @author Andrew Selkirk |
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* @version 1.0 |
* @author Robert Schuster (robertschuster@fsfe.org) |
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* @status updated to 1.2 |
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* @since 1.2 |
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*/ |
*/ |
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public class ProgressMonitorInputStream extends FilterInputStream |
public class ProgressMonitorInputStream extends FilterInputStream |
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{ |
{ |
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private ProgressMonitor monitor; |
private ProgressMonitor monitor; |
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/** |
/** |
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* nread |
* read |
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*/ |
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private int nread; |
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/** |
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* size |
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*/ |
*/ |
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private int size; |
private int read; |
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/** |
/** |
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* Constructor ProgressMonitorInputStream |
* Constructor ProgressMonitorInputStream |
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InputStream stream) |
InputStream stream) |
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{ |
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super(stream); |
super(stream); |
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// TODO |
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int max = 0; |
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try |
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max = stream.available(); |
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} |
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catch ( IOException ioe ) |
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{ |
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// Behave like the JDK here. |
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} |
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monitor = new ProgressMonitor( |
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component, message, null, 0, max ); |
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} |
} |
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/** |
/** |
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* reset |
* reset |
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* @exception IOException TODO |
* @exception IOException TODO |
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*/ |
*/ |
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public synchronized void reset() throws IOException |
public void reset() throws IOException |
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{ |
{ |
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// TODO |
super.reset(); |
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checkMonitorCanceled(); |
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// TODO: The docs says the monitor should be resetted. But to which |
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// value? (mark is not overridden) |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public int read() throws IOException |
public int read() throws IOException |
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{ |
{ |
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return 0; // TODO |
int t = super.read(); |
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monitor.setProgress(++read); |
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checkMonitorCanceled(); |
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return t; |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public int read(byte[] data) throws IOException |
public int read(byte[] data) throws IOException |
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{ |
{ |
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return 0; // TODO |
int t = super.read(data); |
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if ( t > 0 ) |
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{ |
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read += t; |
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monitor.setProgress(read); |
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checkMonitorCanceled(); |
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} |
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else |
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{ |
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monitor.close(); |
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} |
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return t; |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public int read(byte[] data, int offset, int length) throws IOException |
public int read(byte[] data, int offset, int length) throws IOException |
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{ |
{ |
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return 0; // TODO |
int t = super.read(data, offset, length); |
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if ( t > 0 ) |
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{ |
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read += t; |
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monitor.setProgress(read); |
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checkMonitorCanceled(); |
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} |
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else |
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{ |
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monitor.close(); |
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} |
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return t; |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public long skip(long length) throws IOException |
public long skip(long length) throws IOException |
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{ |
{ |
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return 0; // TODO |
long t = super.skip(length); |
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// 'read' may overflow here in rare situations. |
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assert ( (long) read + t <= (long) Integer.MAX_VALUE ); |
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read += (int) t; |
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monitor.setProgress(read); |
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checkMonitorCanceled(); |
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return t; |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public void close() throws IOException |
public void close() throws IOException |
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{ |
{ |
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// TODO |
super.close(); |
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monitor.close(); |
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} |
} |
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/** |
/** |
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*/ |
*/ |
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public ProgressMonitor getProgressMonitor() |
public ProgressMonitor getProgressMonitor() |
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{ |
{ |
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return null; // TODO |
return monitor; |
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} |
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private void checkMonitorCanceled() throws InterruptedIOException |
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{ |
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if ( monitor.isCanceled() ) |
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{ |
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throw new InterruptedIOException("ProgressMonitor was canceled"); |
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} |
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} |
} |
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} |
} |